Microsoft Office app store. credit: Microsoft
"Users can learn more about apps in the store (and read reviews), acquire (or buy) them, and start using them straight away. All apps that are listed on the Store get extensively validated so users can trust them", Microsoft posted on its official blog.
Anyone with a Microsoft account and the preview version of Office, SharePoint or Exchange can download these apps.
The new app store also allows app developers to build apps and list them on the Seller Dashboard.